PubMatic officer (PUBM) sells 12,315 shares in Rule 10b5-1 plan

Rhea-AI Filing Summary

PubMatic, Inc. Chief Growth Officer Paulina Klimenko reported selling 12,315 shares of Class A common stock on January 6, 2026 at a weighted average price of $8.7299 per share. These sales were made under a pre-arranged Rule 10b5-1 trading plan that she adopted on May 8, 2025, which is designed to allow insiders to trade stock according to a preset schedule. After this transaction, she beneficially owned 51,780 PubMatic Class A shares directly. The filing notes that the sale prices ranged from $8.63 to $8.82, and detailed trade breakdowns are available upon request.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Klimenko Paulina

(Last) (First) (Middle)

C/O PUBMATIC, INC.

601 MARSHALL STREET

(Street)

REDWOOD CITY CA 94063

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
PubMatic, Inc. [ PUBM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CHIEF GROWTH OFFICER

3. Date of Earliest Transaction (Month/Day/Year)
01/06/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	01/06/2026		S(1)		12,315	D	$8.7299(2)	51,780	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 8, 2025.

2. The price reported in this line item is a weighted average price. These shares were sold at prices ranging from $8.63 to $8.82, inclusive. The Reporting Person undertakes to provide to the Issuer, any securityholder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.

	/s/ Andrew Woods, Attorney-in-Fact	01/07/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

Who is the insider in this PubMatic (PUBM) Form 4 filing?

The insider is Paulina Klimenko, the Chief Growth Officer of PubMatic, Inc., who is an officer but not a director or 10% owner according to the filing.

How many PubMatic (PUBM) shares did the officer sell and at what price?

Paulina Klimenko sold 12,315 shares of PubMatic Class A common stock at a weighted average price of $8.7299 per share, with individual trades ranging from $8.63 to $8.82.

When did the PubMatic (PUBM) insider transaction occur?

The reported sale of PubMatic Class A common stock occurred on January 6, 2026, as disclosed in the Form 4.

How many PubMatic (PUBM) shares does the insider hold after this transaction?

Following the reported sale, Paulina Klimenko beneficially owned 51,780 shares of PubMatic Class A common stock directly.

Was the PubMatic (PUBM) insider sale made under a Rule 10b5-1 trading plan?

Yes. The filing states that the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Paulina Klimenko on May 8, 2025.

What does the price range in the PubMatic (PUBM) Form 4 mean?

The filing explains that the reported price is a weighted average, and that the shares were sold at prices between $8.63 and $8.82, with full trade details available upon request.